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v l me/whoa Noah asnick Athereof and has a NOAII W'. RASNICK, OF DICKENSON COUNTY, VIRGINIA.

WRENCH.

ivo. 850,315.

Spec'cation of Letters APatent.

Patented April 16, 1907.

Application led December 3, 1906. Serial No. 346,111.

T0 LLZZ `whom, t may concern:

Be it known that I, N oAH W. RAsNIoK, a citizen of the United States, residing in the county of Dickenson and State of Virginia, have invented certain new and useful Ime provements in I/Vrenches; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improved wrench.

The object of the invention is to so construct a wrench that it may be quickly and accurately adjusted with one hand.

Other objects of the invention are to provide a wrench that is quick and accurate in adjustment and will not slip back accidentally after adjustment and which is not liable to mar the material on which it is used.

In the accompanying drawings, Figure l represents a rear elevation of a wrench embodying this improvement, showingthe adjusting-lever in released position. Fig. 2 represents a side elevation, partly in section, of a wrench having .this improvement applied,'the handle portion being broken off. Fig. 3 represents a perspective view of the lockingever detached; and Fig. 4 represents a detail of a portion of a wrench, showing the cam member swung outwardly.

In the embodiment illustrated a wrench is shown having a shank 1 with ratchetteeth 2 on its rear edge and a fixed jaw 3 of ordinary rectangular construction. The shank l is also provided with a handle member 4 of ordinary construction.

A movable jaw 5 is slidably mounted on the shank l and has a clamping-face 6 to cooperate with the fixed jaw 3. This jaw 5 is hollow throughout the greater portion projecting end 7 with a socket 8 therein, in which is housed a coilspring 9. The rear edge of the jaw 5 is cut away above said socket to a point near its top, and a cam member l0 is pivotally mounted in slots *'11 in the jaw thereof projecting slightly beyond the walls of the rear opening in said jaw. The slots ll permit the cam member to move longitudinally a short distance when the lever is moved back and forth. This cam member l() is provided on its straight inner face with ratchet-teeth l2,v which are adapted to engage the teeth 2 of the shank 1, A lever or link 15 is pivotally connected to the aw 5 at 5, with the cam-face l r l 16 and has a slotted opening 17 therein, which straddles the shank l and cam meinber l0 and has its free end projecting to form an operating nger-piece 18. The pivot end of the cam member l0 is preferably provided with a lug 13, against'which the upper end of the spring 9 bears.

In the use of this device when it is desired to move the jaw back and forth the lever l5 is drawn downward by pressing on its end 18 until` it comes in contact with the pivot of the cam member l0, and the pressure of the spring 9 against said cam member l0 forces its teeth out of engagement with the teeth 2 and releases the jaw 5, so that it may be moved to any desired point.

To move the jaw 5 to clamp an article between it and the iiXed jaw, the thumb is placed against the end 7 and the j aw is pushed forward until it engages the article to be clamped. The thumb is then slipped forward and the lever l5 pushed forward on the cam lO until the teeth thereof are locked in engagement with the teeth 2, and the j aw is firmly locked in position.

I claim as my inventionl. In a wrench, the combination of a shank having a iiXed jaw and ratchet-teeth on its rear edge, a movable jaw slidable on said shank and having a cam member pivoted therein and provided with teeth to engage the shank-teeth, and a locking-lever pivoted to said movable jaw and cut out to straddle said shank and cam member, the end wall of said cut-out portion engaging said cam member to lock it to said shank.

2; In a wrench, the combination of a shank having a fixed jaw and ratchet-teeth on its rear edge, a movable jaw slidable on said shank and having a cam member pivoted therein and provided with teeth to engage the shank-teeth, said cam member being pivoted in slots in said jaw, and a locking device pivoted to said movable jaw and having means to engage said cam member to lock it in engagement with the shank.

3. In a wrench, the combination of a shank having a iXed jaw with ratchet-teeth on one edge thereof, a hollow movable jaw slidable on said shank with the edge thereof adjacent the toothed edge of the shank cut out, a toothed cam member pivoted in said movable jaw with its canrface projecting beyond the edges of said cut-out portion and with its tooth in position to engage the teethof the shank, a slotted locking-lever pivoted to said IOO IIO

jaw with one end engaging said lug and bearmg on said Cam member and a slotted lockl l l ing-lever pivoted to said movable jaw and movable' jaw and straddling said shank and cam member and provided at its free end With a 'linger-piece projecting through the l opening in said movable jaw. straddling said shank and Cam member and 4. In awreneh,the combination of ashank provided at its free end with a finger-piece having a fixed jaw with ratchet-teeth on one projecting through the opening in said movedge thereof, a hollow movable jaw slidable able jaw. on said shank with the edge thereof adj aeent In testimony whereof I have hereunto set the toothed edge of the shank out out, a my hand in presence of two subscribing wittoothed @am member pivoted on said inovnesses.

able jaw with its earn-face projeetin(T beyond T v n T the edges of said out-out portion and with its h @AH WV hASB IGK' tooth in position to engage the teeth of the Witnesses:

WrLnY. E. COMPTON,

shank7 a lug" on the lower end of said Gam ORA R. EvANs.

member and a spring housed in said movable 

